package com.moon.interface_api.utils;

import java.io.*;
import java.util.Enumeration;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;

public class FileUtils {


    public static void inputstreamtofile(InputStream ins,File file) throws Exception {
        OutputStream os = new FileOutputStream(file);
        int bytesRead = 0;
        byte[] buffer = new byte[8192];
        while ((bytesRead = ins.read(buffer, 0, 8192)) != -1) {
            os.write(buffer, 0, bytesRead);
        }
        os.flush();
        os.close();
        ins.close();
    }
    /**
     * zip解压  
     * @param srcFile        zip源文件
     * @param destDirPath     解压后的目标文件夹
     * @throws RuntimeException 解压失败会抛出运行时异常
     */
    public static void unZip(File srcFile, String destDirPath) throws RuntimeException {
        long start = System.currentTimeMillis();
        // 判断源文件是否存在
        if (!srcFile.exists()) {
            throw new RuntimeException(srcFile.getPath() + "所指文件不存在");
        }
        // 开始解压
        ZipFile zipFile = null;
        try {
            zipFile = new ZipFile(srcFile);
            Enumeration<?> entries = zipFile.entries();
            while (entries.hasMoreElements()) {
                ZipEntry entry = (ZipEntry) entries.nextElement();
                System.out.println("解压" + entry.getName());
                // 如果是文件夹，就创建个文件夹
                if (entry.isDirectory()) {
                    String dirPath = destDirPath + "/" + entry.getName();
                    File dir = new File(dirPath);
                    dir.mkdirs();
                } else {
                    // 如果是文件，就先创建一个文件，然后用io流把内容copy过去
                    File targetFile = new File(destDirPath + "/" + entry.getName());
                    // 保证这个文件的父文件夹必须要存在
                    if (!targetFile.getParentFile().exists()) {
                        targetFile.getParentFile().mkdirs();
                    }
                    targetFile.createNewFile();
                    // 将压缩文件内容写入到这个文件中
                    InputStream is = zipFile.getInputStream(entry);
                    FileOutputStream fos = new FileOutputStream(targetFile);
                    int len;
                    byte[] buf = new byte[1024];
                    while ((len = is.read(buf)) != -1) {
                        fos.write(buf, 0, len);
                    }
                    // 关流顺序，先打开的后关闭
                    fos.close();
                    is.close();
                }
                long end = System.currentTimeMillis();
                System.out.println("解压完成，耗时：" + (end - start) + " ms");
            }
        } catch(Exception e){
            throw new RuntimeException("unzip error from ZipUtils", e);
        } finally{
            if (zipFile != null) {
                try {
                    zipFile.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }


    /**
     * 递归删除文件夹
     *@Author:chengliang
     *@date 2019/4/11_11:21
     *@param file 文件夹
     *@return 
     */
    public static boolean deleteAnyway(File file){
        File[] files = file.listFiles();
        for (File file1 : files) {
            if(file1.isDirectory()){
                if(file1.delete()){
                    continue;
                }else {
                    if(!deleteAnyway(file1)){
                        return false;
                    }else {
                        file1.delete();
                    }
                }
            }else {
                if(file1.delete()){
                    continue;
                }else {
                    return false;
                }
            }
        }
        return true;
    }
    
    
    
}
